Update harmonic_engine.py

harmonic_engine.py

@@ -58,7 +58,15 @@ CHORD_INTERVALS = {
 }
 
 def parse_chord_symbol(symbol):
+    """Parse chord symbols including slash chords like C/E, Fmaj7/A"""
     symbol = symbol.strip()
+    
+    slash_bass = None
+    if '/' in symbol:
+        parts = symbol.split('/')
+        symbol = parts[0]
+        slash_bass = parts[1]
+    
     if len(symbol) > 1 and symbol[1] in '#b':
         root_str = symbol[:2]
         quality_str = symbol[2:]
@@ -81,7 +89,7 @@ def parse_chord_symbol(symbol):
         quality = 'dom7'
     elif q in ('dim', 'dim7', 'o', 'o7'):
         quality = 'dim7' if '7' in q else 'dim'
-    elif q in ('hdim7', 'm7b5', 'ø7', 'ø'):
+    elif q in ('hdim7', 'm7b5'):
         quality = 'hdim7'
     elif q in ('aug', '+'):
         quality = 'aug'
@@ -108,7 +116,7 @@ def parse_chord_symbol(symbol):
     else:
         quality = 'maj'
 
-    return root_pc, quality
+    return root_pc, quality, slash_bass
 
 def roman_to_chord(roman_str, key_root_pc):
     roman_str = roman_str.strip()
@@ -154,7 +162,7 @@ def roman_to_chord(roman_str, key_root_pc):
 
 class GenreVoicer:
     @staticmethod
-    def voice(root_pc, quality, genre, octave_lh=2, octave_rh=4):
+    def voice(root_pc, quality, genre, octave_lh=2, octave_rh=4, slash_bass=None):
         lh_base = (octave_lh + 1) * 12
         rh_base = (octave_rh + 1) * 12
 
@@ -172,7 +180,13 @@ class GenreVoicer:
                 break
 
         method = getattr(GenreVoicer, f'_voice_{genre.lower()}', GenreVoicer._voice_pop)
-        return method(root_pc, root_lh, root_rh, intervals, third, fifth, seventh, quality)
+        lh, rh = method(root_pc, root_lh, root_rh, intervals, third, fifth, seventh, quality)
+        
+        if slash_bass:
+            bass_pc = note_name_to_pc(slash_bass)
+            lh = [lh_base + bass_pc]
+        
+        return lh, rh
 
     @staticmethod
     def _voice_pop(root_pc, root_lh, root_rh, intervals, third, fifth, seventh, quality):
@@ -278,6 +292,135 @@ class GenreVoicer:
             rh = [root_rh + 4, root_rh + 7]
         return lh, sorted(rh)
 
+
+    @staticmethod
+    def _voice_afrobeats(root_pc, root_lh, root_rh, intervals, third, fifth, seventh, quality):
+        """Afrobeats: Open 5ths, stacked high, modern & spacious"""
+        lh = [root_lh]
+        rh = []
+        if fifth:
+            rh.append(root_rh + fifth)
+        if third:
+            rh.append(root_rh + 12 + third)
+        rh.append(root_rh + 19)
+        return lh, sorted(rh)
+
+    @staticmethod
+    def _voice_trap(root_pc, root_lh, root_rh, intervals, third, fifth, seventh, quality):
+        """Trap: Dark, minor feel, extended voicings"""
+        lh = [root_lh, root_lh + 7]
+        rh = []
+        if third:
+            rh.append(root_rh + third)
+        rh.append(root_rh + 10)
+        rh.append(root_rh + 14)
+        return lh, sorted(rh)
+
+    @staticmethod
+    def _voice_bossa_nova(root_pc, root_lh, root_rh, intervals, third, fifth, seventh, quality):
+        """Bossa Nova: Jazz harmony, gentle 7ths and 9ths"""
+        lh = [root_lh]
+        if seventh:
+            lh.append(root_lh + seventh)
+        else:
+            lh.append(root_lh + 11)
+        
+        rh = []
+        if third:
+            rh.append(root_rh + third)
+        rh.append(root_rh + 9)
+        rh.append(root_rh + 14)
+        return lh, sorted(rh)
+
+    @staticmethod
+    def _voice_hindustani_classical(root_pc, root_lh, root_rh, intervals, third, fifth, seventh, quality):
+        """Hindustani: Drone bass, melodic emphasis on 3rd"""
+        lh = [root_lh, root_lh + 7]
+        rh = []
+        if third:
+            rh.append(root_rh + third)
+            rh.append(root_rh + third + 12)
+        if fifth:
+            rh.append(root_rh + fifth)
+        return lh, sorted(rh)
+
+    @staticmethod
+    def _voice_neo_soul(root_pc, root_lh, root_rh, intervals, third, fifth, seventh, quality):
+        """Neo-Soul: Rich 9ths, 11ths, no 5th"""
+        lh = [root_lh]
+        rh = []
+        if third:
+            rh.append(root_rh + third)
+        sev = seventh if seventh else 10
+        rh.append(root_rh + sev)
+        rh.append(root_rh + 14)
+        if third == 3:
+            rh.append(root_rh + 17)
+        else:
+            rh.append(root_rh + 21)
+        return lh, sorted(rh)
+
+    @staticmethod
+    def _voice_reggae(root_pc, root_lh, root_rh, intervals, third, fifth, seventh, quality):
+        """Reggae: Upbeat skank, major 3rds, simple"""
+        lh = [root_lh]
+        rh = []
+        if third:
+            rh.append(root_rh + third)
+        if fifth:
+            rh.append(root_rh + fifth)
+        rh.append(root_rh + 12)
+        return lh, sorted(rh)
+
+    @staticmethod
+    def _voice_latin(root_pc, root_lh, root_rh, intervals, third, fifth, seventh, quality):
+        """Latin: Montuno style, syncopated feel"""
+        lh = [root_lh, root_lh + 7]
+        rh = []
+        if third:
+            rh.append(root_rh + third)
+        if fifth:
+            rh.append(root_rh + fifth)
+        sev = seventh if seventh else 10
+        rh.append(root_rh + sev)
+        return lh, sorted(rh)
+
+    @staticmethod
+    def _voice_k_pop(root_pc, root_lh, root_rh, intervals, third, fifth, seventh, quality):
+        """K-Pop: Bright, add9 chords, modern production"""
+        lh = [root_lh]
+        rh = []
+        if third:
+            rh.append(root_rh + third)
+        if fifth:
+            rh.append(root_rh + fifth)
+        rh.append(root_rh + 14)
+        rh.append(root_rh + 12)
+        return lh, sorted(rh)
+
+    @staticmethod
+    def _voice_lo_fi(root_pc, root_lh, root_rh, intervals, third, fifth, seventh, quality):
+        """Lo-fi: Jazzy 7ths, close voicings, nostalgic"""
+        lh = [root_lh]
+        rh = []
+        if third:
+            rh.append(root_rh + third)
+        rh.append(root_rh + 7)
+        sev = seventh if seventh else 11
+        rh.append(root_rh + sev)
+        return lh, sorted(rh)
+
+    @staticmethod
+    def _voice_funk(root_pc, root_lh, root_rh, intervals, third, fifth, seventh, quality):
+        """Funk: Dominant 7ths, tight voicings, rhythmic"""
+        lh = [root_lh, root_lh + 10]
+        rh = []
+        if third:
+            rh.append(root_rh + third)
+        rh.append(root_rh + 10)
+        rh.append(root_rh + 14)
+        return lh, sorted(rh)
+
 class VoiceLeader:
     @staticmethod
     def lead(prev_rh, current_rh):